Calculate How Much Gravel Required Calculator

Instantly calculate how many cubic yards, tons, and cubic feet of gravel you need for any project—free and no sign‑up required.

  • Free
  • No sign-up
  • Instant results

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How to use it

  1. Enter the length in feet.
  2. Enter the width in feet.
  3. Enter the depth in inches.
  4. Click Calculate to see cubic yards, tons, and cubic feet.

What it does – The calculator takes your project's length, width, and depth and instantly converts them into three common measurements: cubic yards, cubic feet, and an approximate tonnage. Knowing the exact volume helps you order the right amount of gravel, avoiding costly over‑orders or shortfalls that delay a driveway, patio, or foundation.

Why it matters – Gravel is sold by the cubic yard, but many contractors quote in tons. Using the built‑in 1.4 US tons per cubic yard conversion gives you a reliable estimate for budgeting and for communicating with suppliers.

How to read the results – Cubic yards is the primary quantity to order; cubic feet lets you compare with other materials, and the ton figure shows the weight you’ll need to handle today.

Pro tips

  • Add a 5‑10% waste allowance to cover breakage and spillage.
  • Round up to the nearest 0.1 cubic yard for ordering simplicity.
  • Order a little extra to account for compaction after placement.
  • Double‑check depth measurement; mixing inches and feet is a common mistake.

Real-life examples

  • Homeowner building a new driveway.
  • DIY gardener laying a patio base.
  • Contractor estimating gravel for a drainage trench.

Case study

Mike needed gravel for a 12 ft × 8 ft patio 4 in deep. Using the calculator he saw he required 0.89 cubic yards (≈1.2 tons). He ordered 1 cubic yard, saved $50 on excess material, and completed the patio on schedule.

Frequently asked questions

How do I convert the depth from inches to feet?
The calculator does the conversion automatically; just enter depth in inches.
Why is the ton estimate only approximate?
Tons are derived from a standard 1.4 US tons per cubic yard, which varies slightly with moisture and gravel type.
Can I use the calculator for sand or mulch?
Yes, but use the appropriate weight conversion for those materials; the ton figure will differ.
Do I need to include compaction in my calculation?
Add about 5 % extra volume if you expect the gravel to settle after placement.
What if my area isn’t a perfect rectangle?
Break the area into smaller rectangles, calculate each, then add the results.